Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/73458
Title: Degradative disease in Ulva rigida (Chlorophyceae) associated with Acrochaete geniculata (Chlorophyceae)
Authors: del Campo, E
Garcia-Blairsy Reina, Guillermo 
Correa, JA
UNESCO Clasification: 241707 Algología (ficología)
Keywords: Chondrus-Crispus Rhodophyta
Marine Fishpond Effluents
Endophytic Algae
Lactuca Biofilters
Sp-Nov, et al
Issue Date: 1998
Journal: Journal of Phycology 
Abstract: A destructive disease affecting tank-cultivated Ulva rigida C. Agardh. was characterized by green spots, initially located at the base of the thalli, that spread through the host thallus and gradually caused perforations of the frond. The endophytic filamentous green alga Acrochaete geniculata (Gardner) O'Kelly was identified as the causative agent of the disease. The effects of this infection on the host varied from minor injuries to gross frond destruction. Advanced stages of infection resulted in frond wrinkling and severe tissue loss. These symptoms were caused by a primary compaction of the host cells due to a direct effect of the endophyte followed by secondary bacterial infections that became part of the degradative process initiated by the algal pathogen. Co-cultivation of healthy and diseased fronds resulted in transfer of the infection within 2 weeks; however, attempts to infect the host in the laboratory with actively reproducing suspensions of the endophyte were unsuccessful.
URI: http://hdl.handle.net/10553/73458
ISSN: 0022-3646
DOI: 10.1046/j.1529-8817.1998.340160.x
Source: Journal Of Phycology [ISSN 0022-3646], v. 34 (1), p. 160-166, (Febrero 1998)
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